MacNames

From Soft Experience:

Software solution to automatically rename Macintosh files removing illegal characters and adding the three characters extension to filenames on a Windows NT, 2000 or XP Server to facilitate file types detection and use on Windows machines.
It lets you quickly prepare files created with Macintosh computers and stored on a WinNT , Windows 2000 or Windows XP Server volume for use in a Windows computer as well as shortening Windows long file names for an easy use by a Macintosh: can truncate windows filenames longer than 31 characters . Convert Mac files to PC via a periodic scan of specified folders in interactive Windows application use or Windows service mode use to ensure file names compatibility and cross-platform integration
Does make using Mac files on PC easier : conversion mode takes the illegal characters and turns them into a "-", underscores or any valid Windows character you choose; Windows will identify the appropriate applications associated with renamed files and detects file types. The conversion table can be extended with your custom translations.
MacNames helps you in Windows-Macintosh cross-platform integration tasks in particular migrating documents from Macintosh to Windows NT, renaming the files to remove trailing periods and forward slashes.